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Energy density but not fat content of foods affected energy intake in lean and obese women.
Am J Clin Nutr 1999; 69(5):863-71AJ

Abstract

BACKGROUND

Studies have shown that energy intake increases when both the fat content and energy density of the entire diet increases. When the fat content and energy density vary independently of one another, however, energy density, but not fat content, influences intake.

OBJECTIVE

The present study examined whether energy intake in lean and obese women is affected when either the energy density or the fat content of a portion of the diet is manipulated and palatability is held constant.

DESIGN

In a within-subjects design, 17 lean and 17 obese women consumed meals in the laboratory for four, 4-d test periods. In 3 of these test periods the energy density (4.4 and 6.7 kJ/g) or the fat content (16% and 36% of energy) of compulsory entrees representing 50% of each subject's usual energy intake was manipulated. Additional self-selected foods were consumed ad libitum at meals and as snacks.

RESULTS

There were no systematic differences in palatability of the manipulated foods across conditions. Obese and lean participants responded similarly to the dietary manipulations. Intake of self-selected foods at meals was reduced significantly by 16% for both lean and obese subjects in the low- compared with the high-energy-density condition. The fat content of the compulsory foods had no significant effect on energy intake. Ratings of hunger did not differ between diets.

CONCLUSION

These results indicate that when a portion of the diet was manipulated, the energy density, but not the fat content, of the foods affected total energy intake at meals in both lean and obese women.

Authors+Show Affiliations

Nutrition Department, The Pennsylvania State University, University Park 16802-6501, USA. bjr4@psu.eduNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, P.H.S.

Language

eng

PubMed ID

10232624

Citation

Rolls, B J., et al. "Energy Density but Not Fat Content of Foods Affected Energy Intake in Lean and Obese Women." The American Journal of Clinical Nutrition, vol. 69, no. 5, 1999, pp. 863-71.
Rolls BJ, Bell EA, Castellanos VH, et al. Energy density but not fat content of foods affected energy intake in lean and obese women. Am J Clin Nutr. 1999;69(5):863-71.
Rolls, B. J., Bell, E. A., Castellanos, V. H., Chow, M., Pelkman, C. L., & Thorwart, M. L. (1999). Energy density but not fat content of foods affected energy intake in lean and obese women. The American Journal of Clinical Nutrition, 69(5), pp. 863-71.
Rolls BJ, et al. Energy Density but Not Fat Content of Foods Affected Energy Intake in Lean and Obese Women. Am J Clin Nutr. 1999;69(5):863-71. PubMed PMID: 10232624.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Energy density but not fat content of foods affected energy intake in lean and obese women. AU - Rolls,B J, AU - Bell,E A, AU - Castellanos,V H, AU - Chow,M, AU - Pelkman,C L, AU - Thorwart,M L, PY - 1999/5/8/pubmed PY - 1999/5/8/medline PY - 1999/5/8/entrez SP - 863 EP - 71 JF - The American journal of clinical nutrition JO - Am. J. Clin. Nutr. VL - 69 IS - 5 N2 - BACKGROUND: Studies have shown that energy intake increases when both the fat content and energy density of the entire diet increases. When the fat content and energy density vary independently of one another, however, energy density, but not fat content, influences intake. OBJECTIVE: The present study examined whether energy intake in lean and obese women is affected when either the energy density or the fat content of a portion of the diet is manipulated and palatability is held constant. DESIGN: In a within-subjects design, 17 lean and 17 obese women consumed meals in the laboratory for four, 4-d test periods. In 3 of these test periods the energy density (4.4 and 6.7 kJ/g) or the fat content (16% and 36% of energy) of compulsory entrees representing 50% of each subject's usual energy intake was manipulated. Additional self-selected foods were consumed ad libitum at meals and as snacks. RESULTS: There were no systematic differences in palatability of the manipulated foods across conditions. Obese and lean participants responded similarly to the dietary manipulations. Intake of self-selected foods at meals was reduced significantly by 16% for both lean and obese subjects in the low- compared with the high-energy-density condition. The fat content of the compulsory foods had no significant effect on energy intake. Ratings of hunger did not differ between diets. CONCLUSION: These results indicate that when a portion of the diet was manipulated, the energy density, but not the fat content, of the foods affected total energy intake at meals in both lean and obese women. SN - 0002-9165 UR - https://www.unboundmedicine.com/medline/citation/10232624/Energy_density_but_not_fat_content_of_foods_affected_energy_intake_in_lean_and_obese_women_ L2 - https://academic.oup.com/ajcn/article-lookup/doi/10.1093/ajcn/69.5.863 DB - PRIME DP - Unbound Medicine ER -